critical9.0
CVE-2026-18937
The Broken Link Checker WordPress plugin before 2.4.12 does not limit which query variables it accepts from user input on sites using plain permalinks, allowin…
Impact
The Broken Link Checker WordPress plugin before 2.4.12 does not limit which query variables it accepts from user input on sites using plain permalinks, allowing unauthenticated users to overwrite arbitrary PHP global variables, and to execute arbitrary code on the server when a classic (non-block) is active.
Affected products
| Product | Affected versions |
|---|---|
| Broken Link Checker WordPress Plugin | before 2.4.12 |
Versions were read from the advisory text. No structured product data has been published for this record yet.